/*
 * Copyright (C) 2008 Universidade Federal de Campina Grande
 *  
 * This file is part of OurGrid. 
 *
 * OurGrid is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free 
 * Software Foundation, either version 3 of the License, or (at your option) 
 * any later version. 
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * for more details. 
 * 
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package org.ourgrid.broker.controller;

import java.util.ArrayList;
import java.util.List;

import org.ourgrid.broker.commands.CommandExecutor;
import org.ourgrid.broker.commands.SchedulerData;
import org.ourgrid.broker.dao.JobDAO;
import org.ourgrid.broker.scheduler.SchedulerIF;
import org.ourgrid.common.interfaces.Worker;
import org.ourgrid.reqtrace.Req;

import br.edu.ufcg.lsd.commune.api.FailureNotification;
import br.edu.ufcg.lsd.commune.api.InvokeOnDeploy;
import br.edu.ufcg.lsd.commune.api.RecoveryNotification;
import br.edu.ufcg.lsd.commune.container.servicemanager.ServiceManager;
import br.edu.ufcg.lsd.commune.identification.DeploymentID;
import br.edu.ufcg.lsd.commune.identification.ServiceID;

/**
 *
 */
public class WorkerFailureController {

	private ServiceManager serviceManager;

	@InvokeOnDeploy
	public void init(ServiceManager serviceManager) {
		this.serviceManager = serviceManager;
	}
	
	@Req("REQ330")
	@FailureNotification
	public void doNotifyFailure(Worker monitorable, DeploymentID failedWorkerID) {
		
		ServiceID senderServiceID = failedWorkerID.getServiceID();
		SchedulerIF scheduler = getScheduler(senderServiceID);
		
		
		List<SchedulerData> outputCommands = new ArrayList<SchedulerData>();
		
		if (scheduler != null) {
			outputCommands = scheduler.workerFailure(failedWorkerID.getContainerID().toString() , 
					failedWorkerID.getPublicKey());
			
			if (outputCommands != null) {
				CommandExecutor.getInstance().execute(outputCommands, serviceManager);
			}
		}
	}
	
	@RecoveryNotification
	public void doNotifyRecovery(Worker monitorable) {
		
	}
	
	private SchedulerIF getScheduler(ServiceID senderServiceID) {
		
		Integer jobID = getJobDAO().getJobFromWorker(senderServiceID.getContainerID().toString());
		
		SchedulerIF scheduler = null;
		if (jobID != null) {
			scheduler = getJobDAO().getJobScheduler(jobID);
		} else {
			//TODO log
			return null;
		}
		
		if (scheduler == null) {
			//TODO log
		}
		
		return scheduler;
	}
	
	private JobDAO getJobDAO() {
		return serviceManager.getDAO(JobDAO.class);
	}
}
